“Phobos is of great interest because it may be rich in water ice and carbon-rich materials,” said Alfred McEwen, HiRISE principal investigator at the Lunar and Planetary Laboratory at the University of Arizona, Tucson.”

Phobos 2 arrived safely at Mars in January 1989 and entered into and orbit around Mars as the first step at its destination towards its ultimate goal: to transfer to an orbit that the would make it fly almost in tandem with the Martian moonlet called Phobos (hence the spacecrafts name) and explore the moonlet with highly sophisticated equipment that included two packages of instruments to be placed on the moonlet's surface.